Lamp.



.T. 6L G. G. D'OORBNBOS.

` LAMP.'

ArPLIoA'rIoN Hmm 1.11.12, 190s. v

L n. 6 6 r mm Y m .fg rm, ks il. m

J. G. Gr. DOORENBOS.

. LAMP.

APPLIoATIoN Hmm un. 12, 190s.

917,421. Patented Apr. 6, 1909.

J. L G. G. DooRENBos'.

LAMP.

APPLIGATION FILED MAR. 12, 1908.

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wm W@ j? P JOM Vlllflllllll@ STATES JOHN DOORENBOS AND GARRETT G. DOORENBOS, OF KALAMAZOO, MICHIGAN, ASSIG-NORS TO NATIONAL GAS LIGHT COMPANY, OF KALAMAZOO, MICHIGAN, A CORPORATION OF MICHIGAN.

LAMP

Application filed March l2, 1908.

Specification of Letters Patent.

To all whom fit may concern.'

Be it known 'that we, JOHN Dooitnnnos and Gannnrr G. oonENBos, citizens ol' the United States, residing at Kalamazoo, in the county of Kalamazoo and State ol' Michigan, have invented a new and useful Improvement in Lamps, of which the following is a specification.

Our invention relates particularly to incandescent gas-lam ps employing a cluster or group of burners, and mantles therefor; and our primary object is to provide a lamp ol' the character indicated ol' improved general construction.

The invention is illustrated in its preferred embodiment in the acconul'ianying drawings, in whicha Figure l a side elevational view of a lamp constructed in accordance with our improvements; F 2, a View partly in section and partly in elevation, the section being taken as indicated line 2 of Fig. l; Fig. 53, an enlarged vertical sectional view ol the mixing-tube, and the automatic valve controlling the admission of gas thereto, said mixing-tube being surmounted by a mixingchamber with which are connected the cluster of gas-burners employed; F e. fl, a scction taken as indicated at line 4t of Fig. 2 and showing a detail el' the means employed f r actuating the valve which controls the admission ol' gas to tA e lamp; and Fig. 5, a broken section taken as indicated at line 5 of Fig. 2, and showing a detail of the clamping means ei'nploycd for securing the actuating` red ol' the vertically adjustable upper sectien ol' the mixer-tube employed.

In the construction shown, A represents a gas-pipe from which the lamp is suspended and with which (,oimnunicates a branchpipe A1; Il, a chimney suspended from the pipe l C, a valve controlling the passage of gas through the branch-pipe A1 and equipped with actuating means C1; D, an automatic valve regulating the passage of gas 'from the branch-pipe A1 to the mixer-tube; D1, a disk supported by a pipe D2 connected with the lower end ol the branch-pipe A1, said pipe D2 serving also to support the automatic valve D E, a mixer-tube supported by the disk D1 and comprising telescoping sections, the upper section being surmounted by a mixerchamber E1; F, a plurality of burner-tubes having down-turned orifices, said burnertubes being carried by the chamber El with the interior ol which they communicate; Il, mantles carried by the burner-tubes; G, an adjusting rod connected with the upper tubesection ol' the mixer-tube; G1, clamping means for the rod G; H, a globe-support connected with the disk D1; and H1, a globe supported at its lower portion by the globe-sup port Il and having its upper portion housed by the lower portion olI the chimnev ld.

The lower end or" the pipe A is equipped with a fitting a whose upper end has screw connection with the pipe and whose lower end is closed by a plug (1.1. The fitting a is provided with. a branch 0,2 with which connects a laterally extending pipe-section a3 which is oined by an elbow a4 with the vertically disposed pipe A1. The plug al is flanged at its lower end and is fitted with a ring a5 which is connected by screws a with the cap of the chimney.

The chimney B, in the form shown, comprises a hollow cap, or top, t, suspended from the pipe ,A by means of the screws as; an in ner chimney-pipe 'bl suspended from the chimney-top by means of brackets or hangers b2; an outer chimney-pipe b3 sui-mounted by an upwardly flaring bell b4 separated from the cap b by a space '135,' an air-shield b connected with the lower end of the inner chimney-pipe b1; a hood or bell t7 connected with the lower end of the outer chimney-pipe 53,' and a tube bs extending parallel with the axis of the chimney through the chimney-top l) and the bell 5t, and affording a passage for the branch-pipe A1.

The chimney-top t preferably comprises a dished or obtusely conical sheet-metal member t0, a flat sheet-metal disk Z210 connected with the lower edge thereof, and an asbestos disk t shielding 'the lower surface of the disk 510. The brackets are supported by studs Z112 depending from the disk Z210. The inner chimney-pipe b1 is equipped at its lower end with an outturned flange D23 upon which rests an inturned flange t with which the air-sliiel il b is provided at its upper end. T he shield t is equipped externally a short distance beneath the flange b with a flange Z715 upon which the hood or bell b2 is carried,

and the lower end of the outer chimney-pipe b2 fits over the upper end of the shield b2 and bears upon the adjacent portion of the hood 127. The hood 117 comprises a downwardly and outwardly flaring upper member lr6 and a downwardly and inwardly converging lower member b1? whose upper margin is connectecl with the outer periphery ot thev member b1", the member Z117 being provided with air-inlets 121s. The lower end ot the member 1918 is of suitable size to receive the upper end of the globe H1. The outer chimney-pipe t is provided with a circular row of perforations 519 at its lower end and with a similar row of pertorations 122 at its upperend, thus providing` for the circulation of air between the inner and outer pipes of the chimney. 'l he shield l2 is equipped externally with brackets b21 whose outer or tree ends are connected with the upper member b1 of the hood ZN. rlhe member 721 is provided with a perforation through which. the pipe A1 extends.

Beneath the tube lis, the pipe A1 is equipped with a valve-casing c and valve U. 'l'he valve is an ordinary plug valve whose outer end is equipped with a double-arm actuating lever c1 whose extremities are equipped with outwardly extending studs c2 upon which is mounted a guide ci which has a straight upper edge c1 and a double-incline lower edge c5 forming a central down-turned apex 01. Upon the guide c3 is mounted a slide c7 with which is connected a chain e8 which extends over a pulley e journaled in a bracket 010 carried by the elbow or fitting a1. 'l'. he bracl-:et 610 carries a guard 011 which serves to prevent the chain from getting oill the pulley c". rlhe slidev c7 preferably comprises two triangular plates 012, C13 embracing the guide c3, studs C14 connecting the plates above the member c3, and a stud 015 connecting the apex ol the plates C12, C13 beneath the member 011. rille chain 08 is equipped with branches c1 which connect with the extremities ot the slide c7. rlhe free end ot the chain cs extends to any convenient distance beneath the lamp, the chain being shown broken in Fig. l. When the valve C is in either the fully closed or fully opened position, the guide c3 occupies an inclined position., and the slide c7 rests at the lower end ot the guide. By pulling upon the chain, the valve may be operated either to close or open the valve. After actuation of the valve in one direction and release of the chain, the slide automatically shifts its osition to the opposite end of the guide or llever upon which it is mounted, so as to be in readiness to turn the valve in the opposite direction, when desired.

Connected with the valve-*casing c above the valve C is the tube C17 ot' the pilot-burner C18 which serves as a means for lighting the lamp. The tube 017 lies adjacent to the pipe A1 and extends through the opening in the hood t7 which is provided for said pipe. The lower portion of the pipeA1 is contained withinthe glob e H1, as plainly appears from l ig. 2.

The automatic valve D is of the general construction shown in Doorenboss patent No. 840,831 oi January 8, 1907. It compri-ses l a hollow body d with which the pipe D2 com= municates, said body having a chamber d1 with a central outlet d2 and a ,by-pass d3; a removable cap dt having an orifice d5; a cylinder d'1 having an opening in its bottom comniunicating with the passage di; and a needlevalve Z7 carried by a piston d8 contained. in the cylinder d1". The men'ib er d has a lateral inlet d leading to the chamber d1; and the pipe d2 has a laterally turned outlet d10 registering witli the passage dg. 'lhe lower end of the pipe D2 as lugs CX11 cast thereon, which are connected by screws d12 with the member d. rl'he by-pass d is regulated by a vertically disposed screw d13 which passes through the lower wall ot the member d.

The dislt E1 preferably is cast integrally ritli the pi ie d2 which extends through the disk some distance trom the axis thereol. At the axis ot' the disl; is a threaded pertoration wl'iich receives the lower end ol the mixeietube.

lhe mixentuliell comprises a lower section c liaving its lower end threaded and. screwed into the disli D1, and an upper tube e1, ol' larger diameter, tolescopically connected with the tube c. Preferably, the tube e contains an inner tube e2 which may be slipped out, when desired, te leave a larger passage. The cliamb er E1 preferably comprises an upwardly :flaring bell-shaped memlgv er e3 through whose bottom the tube e1 extends; and a cappiece c4 having a truste-conical wall ci with which are connected nipples, or stub-tubes, c upon which the burner-tubes are removably mounted.

lilach burner-tube l is ol angular form, comprising an inclined tube-section f tclescopically connected witl'i one of the stubtulies et; and a down-turned tube f1 carried by the tube f. Each tube 'if equipped at its lower end with a burner-tip f2 oi refractory material, back oi" v" cli is located a gauze or screen f3. By nre ence, the burner-tip ft has its upper et ge equipped witl'i a tlangejA1 mb raced by a ringf" provided with u p-turned lugs f which engage a flange f7 provided at the lower end of the tulief1. Each tulsef1 is equipped with a ring or llange f8 from which depend mantle-supporting arms f, whose lower ends are equipped with hooks f1 adapted to engage the supporting arms or lugs oi the mantle i: 1.

ls shown in l ig. 2, the rod G is connected at its upper end with the lug g carried by the lower end ol he tube c1, and said. rod G passes through the clamping device G1 and may be equipped at its lower end with any suitable handle (not shown). The clamping device G1 is si'iown in detail in lf ig. 5. it comprises an inner cl ping washer g2 bearing against the meml;` er d, an outer clairning washer g3, and adiusting screw g4 which passes through said washers and into the perforation in the member d.

The washers are provided near one edge with complemental grooves g5 through which the rod G extends.

The globe-support H preferably comprises a cup-shaped member h having an outwardly curved liange b1 at its upper end; and a ring h2 having lthreade d connection with the member it and provided with a flange 71.3 curved to correspond with the curve of the rlange h1. The globe has a curved ilange adapted to be confined between the flanges 71,1 and 71,3. The member 71, is equipped internally with lugs 7L* adapted to pass through slots 7a3 with which the disl D1 is provided. rlhe cup-shaped member 7L is of large enough diameter to slip over the disk D1, as shown. T he lugs h4 and slots 71,5 afford a bayonet-joint connection between the member 7L and the disk D1. The bottom of the cup-shaped member 71, is cut away to afford an opening 71, which affords access to the rod G and the valve or screw (Z13.

The manner of use will be readily understood from the foregoing detailed description. When the lamp parts are properly assembled and gas is admitted to the pipe A, gas will pass through the pilot burner C18, so that a small flame may be maintained for lighting the burners. When itis desired to light the burners, it is only necessary to pull the chain cs, which will operate to throw the valve C to the open position. Upon release of the chain, the slide c7 will shift, its position to the other end of its guide so as to be in readiness to close the valve when the chain is again pulled. With the valve C open, will be supplied through the automatically acting valve D to the mixer-tube; and air will be drawn through the opening 71, of the globesupport in the mixer-tube, from whence the mixture will pass to the chamber E1 and thence to the burners. Air will be drawn in through the openings Z113 of the hood 57 and deflected by the shield 1), where the air will serve to complete the combustion. Experience has shown that the construction provides against the formation of carbon or soot upon the mantles. vWhen it is desired to replace the mantles, the vertically adjustable mixer-tube e1 which carries the chamber E1 and the burners mounted thereon, may be lowered through the medium of the actuating-rod, and the burners may be removed from the stub-tubes e. upon which they are mounted and the mantles replaced. Afterward the tube c1 may be elevated to its normal position where the burners and mantles will be shielded from direct access of air entering through the openings 61S of the hood 7)?.

It is to be observed that the provision of the apex cU at the lower edge of the guide c3 and the stud C11" adapted to engage the lower edge of the guide c3 obviates any danger of the slide c7 stopping at a dead center, even though the valve C should be carelessly actuated, since the slide would always slip from the apex in one direction or the other, even though the guide c3 should occupy a horizontal position when the pull upon the chain is exerted.

The foregoing detailed description has been given for clearness of understanding only, and no undue limitation is to be und erstood therefrom.

What we regard as new, and desire to secure by Letters Patent, is

i.. ln a lamp, the, combination with a burner and a supply pipe, of a valve equipped with an actuating lever, and an automatically shifting actuating member connected with said lever and through the medium of which said valve may be turned in either direction.

2. The combination with the supply pipe of a lamp, of a valve equipped with an actuating lever, a shiftable slide mounted on said lever, and a flexible member connected with said slide and serving to actuate said valve through the medium of said slide.

3. The combination with the sup} )lypipe of a lamp, of a valve, a guide connected therewith having a substantially straight upper surface and a double-incline lower surface, a slide mounted. on said guide and a flexible member serving to actuate said slide.

e. The combination with the supply-pipe of a lamp, of a valve equipped with a twoarm lever, a guide member connected with said lever and having a straight upper edge and a double-incline lower edge, a slide mounted on said guide provided with a small bearing adapted to engage the lower edge of said guide, and a flexible member connected with said slide.

5. The combination with the supply-pipe of a lamp, of a valve equipped with a guide extending on opposite sides of the valve, a slide mounted on said guide, a wheel journaled above, said valve, and a chain connected with said slide and passing about, said wheel.

6. ln a lamp, the combination with a pipe, a chimney located beneath said pipe, a branch-pipe located. at one side of the chiinney and equipped with a valve disposed in axial alinement with tbe chimney', a niixertube above said valve, burners supplied by extends, a disk connected with said branchpipe and equipped with a mixer-tube rising therefrom, a valve dis osed beneath said l support.

8. In a lamp, the combination with a chimney provided with,k anair-shield, oi a mixer-tube located beneath said chimney, means for supporting said chimney and mixer-tube, burners carried by and supplied from said mixer-tube, and means for lowering saidv mixer-tube with relation to the chimney.

9. In a lamp, the combination with a chimney, of a mixer-tube section, means for supporting said chimney and mixer-tube, means for raising and lowering the same, a chamber surmounting` said mixer-tube section, burnertubes detachably connected with said chamber, and mantles carried by said burnertubes.

10. In a lamp, the combination of a pipe, a disk carried thereby, a mixer-tube section rising from said disk., a valve disposed beneath said mixer-tube section and communicating with said pipe, and a vertically slidable mixer-tube section connected with said iirsjt-named mixer-tube section and equipped with a plurality of' burners.

11. In means of the character set liorth, the combination with a lower mixer-tube section of a vertically slidable upper mixertube section, a surmounting mixer chamber equipped with a plurality of inclined tubestubs, and angular burner-tubes telescopically mounted on said tube-stubs.

12. In a lamp, the combination of a pipe, l.

a chimney suspendedl therefrom, a branchpipe connected with said first-named pipe above said chimney and disposed at the side of said chimney, a valve connectedV with said branch-pipe e uipped with an actuating lever, a sliiftabe slide connected with. said actuating lever, a bracket carried by said branch-pipe above said valve, a Wheel j ournaled in said bracket, a chain connected with said slide and passed about said wheel, an automatic valve controlling the passage from said branch-pipe, a mixer-tube disposed above said automatic valve, burners supplied by said mixer-tube, means carried by said branch-pipe supporting said automatic valve and said mixer-tube, and a globe inclosing the lower portion of said branch-pipe and said mixer-tube.

13. In a lamp, the combination of a pipe,

eiwilei a disk carried thereby, a mixer-tube carried by said disk, a valve controlling the passage from said pipe to said miXer-tube, said valve being carried by said pipe, and a'globe-support detachably connected with said disk.

14. In a lamp, a mixer-tube section, a surmounting mixer-chamber having a iirustoconical surface equipped with inclined tubestubs, angular burner-tubes having inclined portions telescopically connected With said tube-stubs, and having down-turned portions, and mantles mounted on the downturned portions oiE said burner-tubes.

15. In a lamp, the combination of a pipe, a chimney-top suspended therefrom, a chimney-body suspended from said top, a hood connected with the base-portion of the chimney-body, said chimney-top and hood havving a passage therethrough, abranch-pipe connected with said first-named pipe above said chimney-top and extending through the passage in the chimney-top and hood, a valve carried by said branch-pipe, a mixer-tube carried by said branch-pipe and disposed above said valve, and burners carried by said mixer-tube.

16. In means of the character set forth,

the combination of a pipe, a disk carried thereby, a mixer-tube carried by said disk, a

valve carried by said pipe and disposed- `beneath said mixer-tube, a globe-support carried by said disk, and a removable ringyconnected with the exterior ot' said globesupport, for the purpose set forth.

17. In a lamp, the combination of a chimney provided at its base with a hood supplied Withair inlets, a shield located beneath said hood and depending beneath said air inlets, a supply-pipe, a mixer-tube carried thereby, and burners mounted on said mixer-tube adjacent to the lower end of said shield.

` with said disk and having an opening at its lower end, and means for actuating the adjustable section of the mixer-tube, said means accessible through said opening at the lower end of said globe-support.

JOI-IN DOORENBOS. GARRETT G. DOORENBOS.

In presence ot'- RALPII A. Sor-IAEFER, R. A. RAYMOND. 

